Scalability
React.js scales up easily. This is mainly because of the library’s modularity.
Speed
It boosts the speed of the software development process as developers can easily write individual parts. Changes don’t affect the logic of the application.
Rich user interfaces
A poorly designed interface may break an app. React.js enables developers to build high-quality, rich user interfaces your users will love.
Flexibility
React.js can be easily used to build small websites, medium-size applications, as well as large enterprise-scale systems. Also, the library works in many different environments (e.g., developing mobile apps).
Stability
You don’t have to rewrite your codebase – React.js makes it easy to stay up to date with the latest stable version.
Reusable components
React components save time for developers as there is no need to write various codes for the same features. This also uplifts developers’ productivity.
React community
Among the others, React has been incorporated in Instagram or Facebook’s stacks. It has the support of a large and vibrant community.
SEO
The library is SEO-friendly. E.g., it reduces the page load time.